net: mark net_proto_ops as const

All usages of structure net_proto_ops should be declared const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index a86afce..6817c97 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -777,7 +777,7 @@
 	.max_header	= sizeof(struct rxrpc_header),
 };
 
-static struct net_proto_family rxrpc_family_ops = {
+static const struct net_proto_family rxrpc_family_ops = {
 	.family	= PF_RXRPC,
 	.create = rxrpc_create,
 	.owner	= THIS_MODULE,